I HAVE NEVER HAD A BETTER FILTER TO USE SINCE THE PAST 55 YEARS,IT MAKES THE HOUSE AND AIR SO MUCH CLEANER PLUS A LOT OF LESS HOUSE DUSTING!!!!!!!! AND MUCH BETTER AIR TO BREATHE.

THE ELECTRIC AIR PURFIERS CAN GO HIDE THEM SELVES, I USE TO OWN SEVERAL DIFFERENT KINDS,NOW I'M HAPPY TO BE ABLE TO PURCHASE WONDERFUL FILTRETE FILTERS.